Line-conductor insulator



March 20, 1928. 1,663,011

- 1. W. D. KYLE A TTORNEY.

, lator body of porcelain, a hardenedplastic,

, tending around. the head 14 0 the irllsulator ings 17 being disposed on either side oi the Patented Mar. 26, 1 928.

WILLIAM I). KYLE, 0F MILWAUKEE, WISCONSIN, ASSIGNOR T0 LINE MATERIAL S9141- PANY, OF SOUTH MILWAUKEE, WISCONSIN, A COEPORATIGH 0'1? WISCQNQIQN.

LINE-CONDUCTOR INSULAIOR.

Application filed. September 19, 1924. Serial No. 738,635.

disposed in recesses 21 in the base portion where they receive nuts 22 for clamping the insulator body and base "member together. The bolts may also be looked against rotation in other ways, as by having polygonal shanks disposed in similar, openings, or the nuts may be held against rotation while the bolts are turned.

A threaded attaching member 23 passes through an opening 24.- in the base member The invention relates to insulators, more particularly adapted for attaching conductor wires to buildings or other Supports.

An object of the invention is to provide an insulator having a detachable base member for retaining an attaching screw therein in keyed or driving relation to obviate the necessity for permanently fastening the screw in place on the insulator.

Another object of the invention is to provide an insulator of this type in which the parts of the insulator are connected by a pair of bolts extending longitudinally through them and straddling a transverse wire-receiving opening.

The invent1on further consists in the sev-. eral features hereinafter set forth and more particularly defined by claims at the con clusion hereof.

In the accompanying drawings: Fig. 1 is a side View of an insulator embodying the invention secured to a support;

Fig. 2 is a front end view thereof;

Fig. 3 is a rear end view thereof;

Fig. 4 is a longitudinal sectional view taken on the line 4-4 of Fig. 2;

Fig. 5 is a front end view of the base member at the line 5-5 of Fig. 4; and

Fig. 6 is a front end view of a modified form of insulator body.

In thesedrawings, 10 indicates an insupret'erably polygonal for disposition in a similar recess 26 formed in the base member to prevent relative rotation of the attaching member with respect to the insulator, but the head may enter the insulator body, if desired, for the same purpose. The attaching-scre-w is in the form oi a lag screw, as shown in Figs. 1 and 4, when used on a wooden support, and in the form of a ma-- chine screw when entering a metal support. The attaching screw is preferably centrally dis osed on the insulator, as shown.

n assembling theseparts the attaching screw 23 is inserted through the opening .24 in the base member with its head fitting within the polygonal recess 26. The bolts are then passedthrough the openings 1'? and 18 in the insulator body'and base member, respectively, and the nuts 22 are threaded onto the bolts within the recesses 21 to clamp the insulator body and base member toor other suitable insulating material, having g r. The a taching screw 23 is thereby a transverse wire-receiving opening 11,, an annular wire-receiving groove 12, preferably but not necessarily in the plane of the opening 11, and a wire-receivlng roove 13 exinsulator so that the screw may into a support 27 by turning the insulator. For this purpose a turning toolv may be inserted through thetransverseop'e 11 or b a wrench may be applied to the poi surfaces 28 or 2% on the insulator no base memben respectively, to bring the base member into abutment with t support."

The polygonal surfaces are omitted in-the body in an axial plane and merging wit the opening 11 at opposite sides.

A base member 15 of insulating material abuts against the rear end of the insulator body 10 and is'connected thereto by a pair of bolts 16 passing longitudinally through the insulator body and base member through bolt head receiving recesses 20 therein need openings 1'? and. 18, respectively, the opennot be polygonal when slotted head bolts are used, as t ey may be held against rotation transverse opening 11. In that form of inby a screw driver, or they may be turned by sulator shown in Figs. 1 to 5 the heads 19 of the bolts are of polygonal shape, preferably square, to enter polygonal recesses 20 in the head 14 at the outer ends of the openlugs 17 in order to retain the bolts against rotation. The other ends of the bolts are tionary.

While the base member 15 is preferably of insulating material to avoid staining thewalls of a house to which the device is at tached, it willbeapparent that a metal base 15 and is provided with a headflli which is held against rotation and removal from the.

be turned.

till

gonal Y an t lt insulator body 10'- shown in Fig. 6, and the the screw driver while the nuts are held staill tilt

the groove 13 or 12, but opposite arrangements may be employed. In some cases the line wire may be tied on the insulator by twisting it to form a loop after passing it through the opening 11 and around the groove 13 or the groove 12 on one side of the insulator, this type of fastening being used particularly when the line wire changes direction at the insulator. The loop engaging the insulator is then disposed in the continuous seat formed by these grooves merging with the opening 11 so that the wire is held therein against displacement. The annular groove 12 may also be employed to receive both the line. wire and the tie wire. The device obviates the necessity for cementing or otherwise permanently securing the attaching screw into place and is readily assembled and mounted on a support.

What I claim as new and desire to secureby Letters Patent is:

1., An insulator comprising an insulator body having a wire-receiving portion, a base member, a threaded attaching member substantially centrally thereof extending loosely through said base member and having a non-circular head engageable therewith, and clamping means for securing said base member to said insulator body to retain the head of said attaching member between them, said attaching member being held. Within the insulator against relative rotation, whereby the attaching member may be screwed into a support by rotation of the insulator.

2. An insulator comprising an insulator body having a Wire-receiving portion, a base member, a threaded attaching member ex tending loosely through said base member but having non circular portions held therein against relative rotation to permit driving tilt of said attaching member by the insulator, metal reenforcing and clamping means for securing said base member to said insulator body to retain said attaching mean against longitudinal retrieval meson 3. An insulator comprising an insulator body having a wire-receiving portion, a base member, a threaded attaching member ex tending loosely through said base member and having a polygonal head fitting therein. to prevent its relative rotation and to permit driving of said attaching member by the insulator and metal clamping means for securing said base member to said insulator body to retain the head of said attaching member in said base member.

4;. An insulator comprising an insulator body having a Wire-receiving portion, a

polygonal tool-receiving base member, a threaded attaching member extending loosely through said base member but held therein against relative rotation to permit driving by said base member, and means for securing said base member to said insulator body to retain said attaching member against removal.

6. An insulator comprising an insulator body havinga wire-receiving portion, a base member, an attaching screw extending loosely through said base member substantially centrally therein and havin a head engage able during driving with t e rearward end of said base member, and means for securing said base member to said insulator body for retaining the head of said attaching screw between them, said screw having noncircular portions held loosely Within the base member against relative rotation and the insulator having tool-receiving abutments for screwing said attaching screw into a support.

In. testimony whereof, I afiix my signature.

WIl'lLIAM D, KYLE.

wa n EERTEFEQATE f)? @QRRECTEQN.

"Granted March 20, W28: 20

WELILliMfi KYLE.

ted specification 0? the i :ubsmi pzamm requirimg mrmctis Page 2, line 30, claim iiagwm'ds "subsmmiaifl y miiiraiiy thereni and insert theissime a ts? the Wan? mflsmber, iim 3K; and timt the said Letters Patent read with Ema. cmrrecticlza tiaewm iiggn the same may confmm in the case in m Pateaiai Giiice. fAgai'ii, A. E. 1928.

tiiiefi that. @i'wr aypems in the prim hezreh an n ieiiows:

M. 5. Moan}, Acting Commissioner of Patents. 

